We have a BT shield v1.1,it is a serial port Bluetooth module (Slave) breakout board, and it compatible with Arduino, can directly plug in with Arduino and use the UART port for Bluetooth communication. But just to make a simple breakout , it also has many flaws : can not work with other shield together, just support 5V voltage interface, can not simply switch to different channel, etc.

Now we release this v2.0 version with HC-06, it has many improves from the previous shield.

What's new?1 Now we make the full Arduino footprint , and add the stackable socket for connecting with other Arduino shield like Ethernet shield , SD card shield.

2 Add a power switch for the shield, now you not just use it with some 5V interface board like Arduino, but also now can compatible with many other 3v3 boards like IFAT-32, Leaf Maple, and so on.

3 The BT shield v1.1 just can communicate with Arduino board, and it's inconvenient to change its setting by AT command through USB. Now the new board has a switcher, you can change the module connection, so when you put the switcher to the "To Board" side, it can control by Arduino or IFLAT32, but to "To FT232" side, it connect to the FT232D IC, you can use the Arduino IDE or other serial monitor software to send it the AT command.

4 In the free area, we provide you a prototype area, and you can build a small circuit there for your Bluetooth project.

Get the datasheet , schematic and demo code on the product page here: http://iteadstudio.com/store/index.php?main_page=product_info&cPath=18&products_id=307